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<h1 class="topictitle1">同一个NDMP Server多个并行任务部分失败</h1>
<div><div class="section"><h4 class="sectiontitle">现象描述</h4><p>同一个NDMP Server下同时并行多个文件系统的备份任务，部分备份任务执行失败。</p>
<div class="fignone"><span class="figcap"><b>图1 </b>备份任务</span><br><span><img src="zh-cn_image_0000002018901578.png"></span></div>
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<div class="fignone"><span class="figcap"><b>图2 </b>失败任务</span><br><span><img src="zh-cn_image_0000002018901854.png"></span></div>
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<div class="section"><h4 class="sectiontitle">可能原因</h4><p>不同的存储厂商NDMP服务支持并行的备份任务上限不同，可能触发了存储厂商的流控限制。</p>
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<div class="section"><h4 class="sectiontitle">处理步骤</h4><ol><li><span>根据各存储厂商流控阈值调整并行备份任务数。以OceanStor Dorado为例，可通过<a href="http://storageinfo.rnd.huawei.com/spec/#/home" target="_blank" rel="noopener noreferrer">规格查询</a>工具获取具体型号的流控阈值。</span></li><li><span>选择<span class="uicontrol">“保护 &gt; 文件系统 &gt; 存储设备”</span>。</span></li><li><span>在设备所在行右侧选择<span class="uicontrol">“更多 &gt; 修改”</span>。</span></li><li><span>修改<span class="uicontrol">“并发任务数”</span>不大于对应厂商提供的流控阈值。</span></li><li><span>单击<span class="uicontrol">“确定”</span>。</span></li></ol>
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